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    <title>Document</title>
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<script>
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    document.body.addEventListener('DOMNodeInserted', () => {
        console.log('Any Node add to \<body\>')
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    for (let i = 0; i < 100; i++) {
        const span = document.createElement('span');
        document.body.appendChild(span);
        span.innerText = `I am ${i}`;
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